After watching the farmers and their lost dreams: the dust bowl years video segment, reflect back on the stories of two american farming families as they struggled to survive the dust storms that overtook the plains write a paragraph in reaction to what the survivor shares as well as your thoughts on what it might have been like to experience a dust storm. as you complete this activity, consider how wind erosion contributed to the dust bowl disaster.

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

What are the seven economic and social goals?